Germany Tomorrow by Otto Strasser is an Anti-Marxist, Anti-Hitler Socialist work, and a fairly good starting point.

Here is a collection of his translated articles. And here is a collection of his older brother Gregor's articles.

For some German self-titled National Bolsheviks from the same era, Karl Otto Paetal and Ernst Niekisch are your guys. Both links go to a collection of translated respective articles.

Stalin: The Enduring Legacy by Kerry Bolton is pretty good. Bolton looks at the pros of Stalin from a right-wing perspective, fighting degenerate art, Soviet Anti-Zionism, anti-globalism, etc.